CAS Number Index

A CAS Registry Number,also referred to as CASRN or CAS Number, is a unique numerical identifier assigned by the Chemical Abstracts Service (CAS) to every chemical substance described in the open scientific literature (currently including all substances described from 1957 through the present, plus some substances from the early or mid 1900s), including organic and inorganiccompounds, minerals, isotopes, alloys and nonstructurable materials (UVCBs, of unknown, variable composition, or biological origin).The registry maintained by CAS is an authoritative collection of disclosed chemical substance information. It currently identifies more than 144 million unique organic and inorganic substances and 67 million protein and DNA sequences,plus additional information about each substance. It is updated with around 15,000 additional new substances daily.（information coming from wikipedia.org)

Name CAS Number
Tert-Butyl 4-(4-(6-Bromo-4-methyl-3-oxo-3,4-dihydropyrazin-2-ylamino)phenyl)piperazine-1-carboxylate 1346676-54-7
N-{[2-(4-methoxyphenyl)-4-methyl-1,3-thiazol-5-yl]carbonyl}-beta-alanine 1246064-60-7
2-(3-(4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl)-N-(pyridin-2-yl)acetamide 1246042-70-5
5-Bromo-3-(1-ethyl-1H-pyrazol-4-ylamino)-1-methylpyrazin-2(1H)-one 1202932-39-5
N-(2-chlorobenzyl)-2-[3-(2-chlorophenyl)-6-oxopyridazin-1(6H)-yl]acetamide 1246055-83-3
1-[(3-oxo-3,5,6,7,8,9-hexahydro-2H-cyclohepta[c]pyridazin-2-yl)acetyl]piperidine-4-carboxylic acid 1246072-97-8
5-Bromo-1-methyl-3-(4-(piperidin-4-yl)phenylamino)pyrazin-2(1H)-one 1346674-98-3
N-(2,3-dihydro-1H-inden-2-yl)-3-methyl-6-(propan-2-yl)[1,2]oxazolo[5,4-b]pyridine-4-carboxamide 1246047-05-1
2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-(3,4-dimethoxyphenethyl)acetamide 1246069-82-8
N-(4-fluoro-2-{[2-(2-methoxyphenyl)ethyl]carbamoyl}phenyl)pyrrolidine-1-carboxamide 1246055-89-9
N-{[2-(4-methoxyphenyl)-4-methyl-1,3-thiazol-5-yl]carbonyl}glycylglycine 1246072-46-7
N-(2-{[(2Z)-5-cyclohexyl-1,3,4-thiadiazol-2(3H)-ylidene]amino}-2-oxoethyl)-4-(pyridin-2-yl)piperazine-1-carboxamide 1246057-68-0
N-{[6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl]acetyl}glycine 1246063-93-3
(4-benzylpiperazin-1-yl)[3,4-dimethyl-2-(1H-tetrazol-1-yl)phenyl]methanone 1246073-20-0
{1-[({[3-(3-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]cyclohexyl}acetic acid 1246047-17-5
N-[2-(1H-benzimidazol-2-ylamino)-2-oxoethyl]-4-(pyridin-2-yl)piperazine-1-carboxamide 1246057-83-9
2-{2-[4-(3-chlorophenyl)piperazino]-2-oxoethyl}-6-(2-furyl)-3(2H)-pyridazinone 1246055-10-6
2-((4-Methylbenzyl)(propyl)amino)acetonitrile 1249288-57-0
{1-[({[3-(3,4-dimethoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)methyl]cyclohexyl}acetic acid 1246064-70-9
N-[2-(1H-indol-3-yl)ethyl]-4-propyl-2-(1H-pyrrol-1-yl)-1,3-thiazole-5-carboxamide 1246064-06-1
2-[3-(2-chlorophenyl)-6-oxo-1(6H)-pyridazinyl]-N~1~-isopropylacetamide 1246060-25-2
2-{2-[4-(4-methoxyphenyl)piperazino]-2-oxoethyl}-6-(2-thienyl)-3(2H)-pyridazinone 1246064-75-4
N-(1-cyanocycloheptyl)-2-[4-(2-oxoimidazolidin-1-yl)piperidin-1-yl]acetamide 1311818-02-6
N-(4-tert-butylphenyl)-2-[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide 1246070-08-5
N-(1-cyano-1-cyclopropylethyl)-2-[4-(2-oxoimidazolidin-1-yl)piperidin-1-yl]acetamide 1311466-85-9
N-[(2E)-5-cyclopropyl-1,3,4-thiadiazol-2(3H)-ylidene]-2-[6-oxo-3-(thiophen-2-yl)pyridazin-1(6H)-yl]acetamide 1246043-14-0
methyl N-({5-fluoro-2-[(pyrrolidin-1-ylcarbonyl)amino]phenyl}carbonyl)glycinate 1246048-83-8
N-{2-[(1-benzylpiperidin-4-yl)carbamoyl]-4-fluorophenyl}pyrrolidine-1-carboxamide 1246049-33-1
4-({[3-(2-fluoro-4-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetyl}amino)butanoic acid 1246064-19-6
6-(2-chlorophenyl)-2-[2-oxo-2-(1-pyrrolidinyl)ethyl]-3(2H)-pyridazinone 1246060-44-5
5-Bromo-1-methyl-3-(2-methylisoindolin-5-ylamino)pyrazin-2(1H)-one 1346675-30-6
N-[3-(acetylamino)phenyl]-2-[3-(4-fluoro-2-methoxyphenyl)-6-oxopyridazin-1(6H)-yl]acetamide 1246049-37-5
6-Chloro-2-isopropyl-3-methyl-3H-quinazolin-4-one 815593-50-1
4-butyl-N-(1H-indol-5-yl)-2-(1H-pyrrol-1-yl)-1,3-thiazole-5-carboxamide 1246071-63-5
N-(1-cyanocycloheptyl)-2-{[4-(ethanesulfonyl)phenyl]amino}acetamide 1298626-19-3
5-Bromo-1-methyl-3-(1-methyl-5-((methyl(oxetan-3-yl)amino)methyl)-1H-pyrazol-3-ylamino)pyridin-2(1H)-one 1346676-45-6
1-Methyl-5-((methyl(oxetan-3-yl)amino)methyl)-1H-pyrazol-3-amine 1346676-44-5
5,6,7,8-Tetrahydro-1H-benzo[b]cyclopenta[d]thiophen-3(2H)-one 1346672-54-5
2'-(2-methoxyethyl)-1'-oxo-N-(5-propyl-1,3,4-thiadiazol-2-yl)-1',4'-dihydro-2'H-spiro[cyclohexane-1,3'-isoquinoline]-4'-carboxamide 1246036-38-3
5-Bromo-1-methyl-3-[[6-(1-piperazinyl)-3-pyridazinyl]amino]-2(1h)-pyridinone 1346676-67-2
3,4,6,7,8,9-Hexahydro-6,9-methanopyrazino[1,2-a]indol-1(2H)-one 1346676-80-9
N-Methyl-N-((1-methyl-3-nitro-1H-pyrazol-5-yl)methyl)oxetan-3-amine 1346676-43-4
1,4-Piperidinedicarboxamide, N4-[6-(1-pyrrolidinyl)-3-pyridinyl]- 1311745-98-8
2-(3-bromo-2-methylphenyl)-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1(2H)-one 1346672-38-5
(1-(2-bromoethyl)-3-nitro-1H-pyrazol-5-yl)methanol 1227210-30-1
Ethyl 1-(2-aminoethyl)-1,4,5,6-tetrahydro-5,5-dimethylcyclopenta[b]pyrrole-2-carboxylate 1346674-22-3
n-(Sec-butyl)-3-(4-fluorophenoxy)propanamide 1311476-50-2
5-Bromo-1-methyl-3-(5-methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-ylamino)pyridin-2(1H)-one 1346673-59-3
tert-Butyl 3-(6-Aminopyridin-3-yloxy)azetidine-1-carboxylate 1346674-72-3
Tert-Butyl 4-(6-(5-Bromo-1-methyl-2-oxo-1,2-dihydropyridin-3-ylamino)pyridin-3-yl)-3-oxopiperazine-1-carboxylate 1346676-72-9

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